Advanced Nutrients ph perfect is meant to be used with only their other additives that don't affect it like voodoo juice and overdrive for example. The ph perfect makes things alot easier and keeps the ph at the same level all the time and plants hate ph fluctuation and their coco blend is made specifically for coco coir to prevent problems other nutrient lines have with growing in coco. I've had zero issues with their line so far other than not needing the big bud I bought. Give 1/3 to half rec. Dose and your good to go. My Ppm after adding nutrients is around 100ppm and my results speak for themselfs.